hollinger



(No Model.) 2 Sheets-Sheet 1. J. HOLLINGER.

PIPE COUPLING FOR BOILERS.

No. 377,156. Patented Jan. 31, 1888.

WITNES m4 INVENITOR:

zdzw fi BY MU/(1M i! ATTORNEYS.

(No Model.) 2 Sheets-Sheet 2.

J. HOLLINGER.

PIPE COUPLING FOR BOILERS.

No. 377,156. Patented Jan. 31, 1888.

INVENTOR WITNESSES ATTORNEYS.

NY PETERS. Plmlulilhograplmr. Wnslnlvglcn. D c.

UNITED STATES PATENT GFFICE.

JAMES HOLLINGER, OF NEXV YORK, N. Y.

PlPE-COUPLING FOR BCILERS.

SPECIFICATION forming part of Letters Patent No. 377,156, dated January31, 1888.

Application filed February 2, 1887. Serial No. 226,272.

' To all whom, it may concern:

Be it known that I. J nuns HOLLINGER, of the city, county, and State ofNew York, have invented a new and Improved PipeCoupling for Boilers, ofwhich the following is a full, clear, and exact description.

My invention relates to kitchen boilers; and it consists, principally,of a single opening in the boiler, combined with a coupling in saidopening for connecting the various pipes to the boiler.

The invention also consists of the special construction of the coupling,all as hereinafter described and claimed.

Reference is to behad to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all-the figures.

Figure 1 isasectional elevation of a kitchen boiler having the couplingand pipes connected therewith in accordance with my invention. Fig. 2 isan enlarged plan view of the coupling; and Fig. 3 is a sectionalelevation of the same, taken 011 the line or x of Fig. 2. Fig. 4 is anenlarged sectional plan view taken near the lower end of the boiler.

A represents the boiler formed with a single screw-threaded opening, B,at the bottom. In this opening is screwed the coupling 0, the same beingformed with the screw-threads a,to fit the screw-threaded opening B. Thecoupling C is formed with the vertical passage D through it. Thispassage is enlarged and screw-threaded at d to receive the screwthreaded end of the coupling E, in which is screwed the water-supplypipe E, a checkvalve, F, being titted in the said pipe E and coupling E,to prevent regurgitation or backflow of water from the boiler. From theopen- (No model.)

ing D leads the side port, G, to which is connected the pipe H, forconducting the cold wa ter to the range. (Not shown.)

I is the return-pipe, which is connected to the horizontal port K in thecoupling 0. The port K communicates with a vertical passage, K, made inthe coupling, in which is secured the pipe K", which projects ashortdistance up into the interiorof the boiler for directing the hot waterto the top of the boiler.

J represents a horizontal outlet-port of the coupling, to which isattached the pipe M, for conducting the hot water to a sink or otherplace for use. The port J communicates with the vertical port J, inwhich is fitted the pipe Jiwhich reaches nearly to the top of theboiler, so that when water is drawn from the boilerit will be taken fromthe top, where itis hottest.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. As a new and improved article ofmanufacture, the coupling 0, formed with the part provided withscrewthreads a and with the horizontal ports G J K and the verticalports J K, communicating with the ports J K, respectively, and the portD, passing through the coupling, and also communicating with the port G,substantially as described.

2. The coupling 0, having the range-pipes and the inlet and outlet pipesconnected to it in suitable ports in the coupling, in combination withthe boiler A,and the pipes K and J,

connected to the couplinginside of the boiler,

substantially as described.

J AMES HOLLINGER.

\Vitnesses:

H. A. WEs'r, O. Snnewlck.

